terpene metabolism monoterpene biosynthesis (-)-beta-pinene biosynthesis (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane It is produced from geranyl pyrophosphate, via cyclisation of linaloyl pyrophosphate followed by loss of a proton from the carbocation equivalent. KEGG:map01110 (-)-beta-pinene biosyntesis UPa:UPA00986 pathway KEGG:map00902